Microfiche. [Denver, Colo. : U.S. Geological Survey, 1982?]. 2 microfiches ; 11 x 15 cm. One folded illustrations in pocket. "July 1981." Bibliography: leaves 3-4.
Series:
Open-file report ; 81-745
OCLC:
(OCoLC)10269767
Locations:
OVUX522 -- University of Iowa Libraries (Iowa City)
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.